Diseño e implementación de un simulador para el diagnóstico de la unidad de control electrónico de motor (ecu) en un vehículo marca Hyundai Accent.

Abstract

A simulator was developed for the diagnosis of the electronic engine control unit (ECU) on a Hyundai Accent Brand vehicle. The different technologies were evaluated, for the desing and implementation of the same through the heuristic method. The simulator was implemented in four stages. The first stage is the signal generations of the throttle position sensor. (TPS) The engine coolant temperatura sensor. (ECT) The intake air temperature sensor. (IAT) The oxygen sensor. (O2) Intake manifold absolute pressure sensor. (MAP) and Mass air flow sensor (MAF). The second stage is composed of the generation of signals from the CKP crankshaft position sensor and camshaft position sensor (CMP) by using the development card arduino nano with the aim of programming and promoting the simulation of PWM pulses, analog characteristics emitted by the automotive sensors, through the converter digital – analog by using of operational amplifiers (OPAM). The connection of the Human Machine Interface (HMI) was established as the third stage, the desing and implementation were done by using the graphical interface developed in Labview and its handling through the tactile manipulation device. The fourth stage complemented the diagnosis of the injectors and coils by using NPN 3904 and PNP 3906 transistors that allow the detection of pulses emitted in case of failure or good condition. The simulator was denominated V1.0. The final housing was designed and built through the Solidwork software with the objective of referring protection. The tests and executed results allowed to check the functionality and efficiency of the device when verifying an improvement of the diagnosis time, and monitoring on the electronic control unit. (ECU) by 73.5 %. It is recommended to follow manipulation process indicated by the autor.